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Crystal Lake, IL

HVAC, Plumbing & Electric in Crystal Lake

See our Crystal Lake customer reviews below

Local Reviews
for Crystal Lake, IL

Rated 4.9 out of 5 stars based on 583 customer reviews

Map of Crystal Lake, IL

Thank you




All of the workers have been very courteous and forthcoming; explaining clearly, what they were doing and why. They were very cautious in wearing booties to avoid messing the home. It cannot be a pleasant job working on sewers, but they did it with a smile. I'd rate the pricing but I have nothing to compare it to as Black Diamond came highly recommended and I went no further in checking other plumbers. I'm glad I went with Black Diamond.


Map of Crystal Lake, IL

Excellent Service




My battery back up to the sump pump went out late evening. I am very happy Dan came out late in the evening with bad weather approaching and fixed my battery issue. This was an emergency service call. Dan was very professional and explained everything. Made sure my sump pump was working before he left. I'm happy black diamond was available when I needed them the most. Thank you!


Map of Crystal Lake, IL

Great service





Map of Crystal Lake, IL

Great Service





Map of Crystal Lake, IL

Great Service




We are always satisfied with the timely and knowledgeable service received. Yesterday it was Andrew, who quickly explained the cause of the problem and how he would fix it. Very pleased!


Map of Crystal Lake, IL

Great service!




Very professional. Offered great advice.


Map of Crystal Lake, IL

"Great Service




Always on time, and always send excellent employees


Map of Crystal Lake, IL

Great service . Technician was very courteous and knowledgeable.




The cost was more than I expected. If a job is not major, there should be a way to get a ballpark estimate over the phone.


Response from Black Diamond:

Thanks for your feedback - we're sorry that you were unhappy with the price. We don't guess at the costs over the phone, which is why we come out to investigate the problem and quote an accurate price before any work begins so that there are no surprises. I see that you also received a $130 discount from the electrician. We're sorry that you regret approving the work at that price now that it's been completed. Please let us know if there are any other questions you may have about our visit.


Map of Crystal Lake, IL

great service




Mike did a great job.


Map of Crystal Lake, IL

Great service.




Keith knew exactly what to do. He was very respectful of our property. And made sure we were comfortable on very hot and humid day.


It was great service at an awesome price




Michael was knowledgeable, helpful, patient and nice to be with. Did his job and cleaned up well after the work was completed.


Great Service




Our service tech, Nick, diagnosed the problem with our A/C unit quickly and fixed it in no time. Nick was exceptional...very informative, pleasant and courteous.


Fast, efficient, helpful




Nick called to let me know he was able to come earlier than scheduled, which was great. He efficiently did the air conditioning check, made a suggestion about getting a certain part, but did not push it too hard. I appreciate "non-hard sell" suggestions. He even remembered that the last time he came over was right before my son's wedding, and he asked how it went!! Wonderful, personal service!


Andrew was professional, skilled and good about answering my questions.





Great as always; courteous professional





Great Service




Rick was awesome. Nice, very knowledgeable, and was extremely honest in giving his opinion on what we needed done.


These guys are the best!!!




I have been using black diamond for years, and refer them to anyone who needs hvac, electrical, plumbing, etc. Everyone is professional, prompt, courteous, and honest. And they wear booties which is great. The girls in the office are very friendly as well. Their work is guaranteed, and it's always done right the first time.


Amazing Service!




I have needed services by Black Diamond twice within the past 2 months. Both times I have called late at night and a real ( very polite). person answers. ( No recordings or answering machines!) They sent once Dan within 25 minutes who was very professional and worked until about 4am till my sump pump and back up worked perfectly! then Juan worked on a water leak kitchen sink again very professional and also did excellent job! I would highly recommend !I would call no one else!


Well done!




Richard was professional and clearly explained our options.


Jose's service call tl





Aaron K.

Aaron K.

Pump issue.

Near Live Oak Rd, Crystal Lake, IL 60012
Luis E.

Luis E.

Sump pump

Near Wyndsong Ct, Crystal Lake, IL 60012
Juan M.

Juan M.

Sump pump issue

Near Plum Tree Dr, Crystal Lake, IL 60014
Juan M.

Juan M.

Sump pump issue

Near Wild Ash Ln, Crystal Lake, IL 60012
Nick B.

Nick B.

Water heater

Near US-14, Crystal Lake, IL 60014
Jack L.

Jack L.

Plumbing issues

Near Dole Ave, Crystal Lake, IL 60014
David F.

David F.

Installed a BRYANT air conditioner

Near Brompton Ln, Crystal Lake, IL 60014
Rick A.

Rick A.

Vapor tight

Near State Rte 31, Crystal Lake, IL 60012
Jorge S.

Jorge S.

Water leak

Near Tamarack Trail S, Crystal Lake, IL 60012
Aaron K.

Aaron K.

Rpz test

Near Randall Rd, Crystal Lake, IL 60014
Rick A.

Rick A.

Vanity light fixture

Near Wheatland Dr, Crystal Lake, IL 60014
Rick A.

Rick A.

Vanity light fixture

Near Wheatland Dr, Crystal Lake, IL 60014
Rick A.

Rick A.

Vanity light fixture

Near Wheatland Dr, Crystal Lake, IL 60014
Dave K.

Dave K.

Sump pump failed.

Near Hidden Oak Dr, Crystal Lake, IL 60012
David F.

David F.

Installed a wall heater

Near Oak Knoll Rd, Crystal Lake, IL 60012
Dave K.

Dave K.

Sump pump failed

Near Hidden Oak Dr, Crystal Lake, IL 60012
Gerad A.

Gerad A.

Surge protection outlet

Near Steeple Run, Crystal Lake, IL 60014
Juan M.

Juan M.

Plumbing issue

Near Chasefield Ln, Crystal Lake, IL 60014
Josh P.

Josh P.

Sump pump failed

Near Amberwood Dr, Crystal Lake, IL 60014
Marlon G.

Marlon G.

Install back up battery

Near Meandering Way, Crystal Lake, IL 60014
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